diff --git a/README.md b/README.md
index 0a491222e..ef2a269ad 100644
--- a/README.md
+++ b/README.md
@@ -7,7 +7,7 @@ Central_.
 
 ```kotlin
 dependencies {
-    implementation("dev.forst", "ktor-openapi-generator", "0.4.4")
+    implementation("dev.forst", "ktor-openapi-generator", "0.4.5")
 }
 ```
 
@@ -88,4 +88,4 @@ Extra Features:
 
 ## Examples
 
-Take a look at [a few examples](https://github.com/papsign/Ktor-OpenAPI-Generator/wiki/A-few-examples)
\ No newline at end of file
+Take a look at [a few examples](https://github.com/papsign/Ktor-OpenAPI-Generator/wiki/A-few-examples)
diff --git a/build.gradle.kts b/build.gradle.kts
index 820273a10..47295d1c6 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -3,7 +3,7 @@ import java.net.URL
 
 
 plugins {
-    kotlin("jvm") version "1.6.21"
+    kotlin("jvm") version "1.7.10"
 
     `maven-publish`
     signing
@@ -25,7 +25,7 @@ dependencies {
     implementation(kotlin("stdlib-jdk8"))
 
     // Ktor server dependencies
-    val ktorVersion = "2.0.3"
+    val ktorVersion = "2.1.0"
     implementation("io.ktor", "ktor-server-core", ktorVersion)
     implementation("io.ktor", "ktor-server-auth", ktorVersion)
     implementation("io.ktor", "ktor-serialization-jackson", ktorVersion)
diff --git a/src/main/kotlin/com/papsign/ktor/openapigen/annotations/mapping/OpenAPIName.kt b/src/main/kotlin/com/papsign/ktor/openapigen/annotations/mapping/OpenAPIName.kt
index c0b3a66dc..5b874cbaf 100644
--- a/src/main/kotlin/com/papsign/ktor/openapigen/annotations/mapping/OpenAPIName.kt
+++ b/src/main/kotlin/com/papsign/ktor/openapigen/annotations/mapping/OpenAPIName.kt
@@ -12,8 +12,8 @@ private val cache = Collections.synchronizedMap(HashMap<KParameter, String?>())
 
 val KParameter.openAPIName: String?
     get() = cache.getOrPut(this) {
-       val caseSensitiveName = findAnnotation<OpenAPIName>()?.name ?: name
-       if (findAnnotation<HeaderParam>() != null) caseSensitiveName?.toLowerCase() else caseSensitiveName
+        val caseSensitiveName = findAnnotation<OpenAPIName>()?.name ?: name
+        if (findAnnotation<HeaderParam>() != null) caseSensitiveName?.lowercase(Locale.getDefault()) else caseSensitiveName
     }
 
 fun <T> KParameter.remapOpenAPINames(map: Map<String, T>): Map<String, T> {
diff --git a/src/main/kotlin/com/papsign/ktor/openapigen/annotations/type/string/lowercase/LowerCaseValidator.kt b/src/main/kotlin/com/papsign/ktor/openapigen/annotations/type/string/lowercase/LowerCaseValidator.kt
index ddc173698..be0699e8f 100644
--- a/src/main/kotlin/com/papsign/ktor/openapigen/annotations/type/string/lowercase/LowerCaseValidator.kt
+++ b/src/main/kotlin/com/papsign/ktor/openapigen/annotations/type/string/lowercase/LowerCaseValidator.kt
@@ -3,10 +3,11 @@ package com.papsign.ktor.openapigen.annotations.type.string.lowercase
 import com.papsign.ktor.openapigen.getKType
 import com.papsign.ktor.openapigen.validation.Validator
 import com.papsign.ktor.openapigen.annotations.type.SingleTypeValidator
+import java.util.Locale
 
 object LowerCaseValidator : SingleTypeValidator<LowerCase>(getKType<String>(), { LowerCaseValidator }), Validator {
     override fun <T> validate(subject: T?): T? {
         @Suppress("UNCHECKED_CAST")
-        return (subject as String?)?.toLowerCase() as T?
+        return (subject as String?)?.lowercase(Locale.getDefault()) as T?
     }
 }
diff --git a/src/main/kotlin/com/papsign/ktor/openapigen/content/type/multipart/MultipartFormDataContentProvider.kt b/src/main/kotlin/com/papsign/ktor/openapigen/content/type/multipart/MultipartFormDataContentProvider.kt
index 070badf21..e93e0bba7 100644
--- a/src/main/kotlin/com/papsign/ktor/openapigen/content/type/multipart/MultipartFormDataContentProvider.kt
+++ b/src/main/kotlin/com/papsign/ktor/openapigen/content/type/multipart/MultipartFormDataContentProvider.kt
@@ -68,7 +68,7 @@ object MultipartFormDataContentProvider : BodyParser, OpenAPIGenModuleExtension
     private val typeContentTypes = HashMap<KType, Map<String, MediaTypeEncodingModel>>()
 
 
-    override suspend fun <T : Any> parseBody(type: KType, request: PipelineContext<Unit, ApplicationCall>): T {
+    override suspend fun <T : Any> parseBody(clazz: KType, request: PipelineContext<Unit, ApplicationCall>): T {
         val objectMap = HashMap<String, Any>()
         request.context.receiveMultipart().forEachPart {
             val name = it.name
@@ -83,11 +83,12 @@ object MultipartFormDataContentProvider : BodyParser, OpenAPIGenModuleExtension
                     is PartData.BinaryItem -> {
                         objectMap[name] = ContentInputStream(it.contentType, it.provider().asStream())
                     }
+                    else -> {}
                 }
             }
         }
         @Suppress("UNCHECKED_CAST")
-        val ctor = (type.classifier as KClass<T>).primaryConstructor!!
+        val ctor = (clazz.classifier as KClass<T>).primaryConstructor!!
         return ctor.callBy(ctor.parameters.associateWith {
             val raw = objectMap[it.openAPIName]
             if ((raw == null || (raw !is InputStream && streamTypes.contains(it.type))) && it.type.isMarkedNullable) {
diff --git a/src/main/kotlin/com/papsign/ktor/openapigen/modules/handlers/RouteHandler.kt b/src/main/kotlin/com/papsign/ktor/openapigen/modules/handlers/RouteHandler.kt
index a763cdbfb..5d0eb2a87 100644
--- a/src/main/kotlin/com/papsign/ktor/openapigen/modules/handlers/RouteHandler.kt
+++ b/src/main/kotlin/com/papsign/ktor/openapigen/modules/handlers/RouteHandler.kt
@@ -10,6 +10,7 @@ import com.papsign.ktor.openapigen.modules.openapi.HandlerModule
 import com.papsign.ktor.openapigen.modules.openapi.OperationModule
 import com.papsign.ktor.openapigen.modules.providers.MethodProvider
 import com.papsign.ktor.openapigen.modules.providers.PathProvider
+import java.util.Locale
 import org.slf4j.Logger
 import org.slf4j.LoggerFactory
 
@@ -25,7 +26,7 @@ object RouteHandler: HandlerModule {
         val operationModules = provider.ofType<OperationModule>()
         apiGen.api.paths.getOrPut(path) { PathItemModel() }.also {pathItem ->
             methods.forEach {
-                val name = it.method.value.toLowerCase()
+                val name = it.method.value.lowercase(Locale.getDefault())
                 //if (pathItem.containsKey(name)) error("$path::$name already defined")
                 val op = pathItem.getOrPut(name) { OperationModel() } as OperationModel
                 operationModules.forEach {
diff --git a/src/main/kotlin/com/papsign/ktor/openapigen/parameters/handlers/ModularParameterHandler.kt b/src/main/kotlin/com/papsign/ktor/openapigen/parameters/handlers/ModularParameterHandler.kt
index c4b21bcae..50ff515c9 100644
--- a/src/main/kotlin/com/papsign/ktor/openapigen/parameters/handlers/ModularParameterHandler.kt
+++ b/src/main/kotlin/com/papsign/ktor/openapigen/parameters/handlers/ModularParameterHandler.kt
@@ -19,6 +19,7 @@ import com.papsign.ktor.openapigen.schema.builder.provider.FinalSchemaBuilderPro
 import io.ktor.http.Headers
 import io.ktor.http.Parameters
 import io.ktor.util.toMap
+import java.util.Locale
 import kotlin.reflect.KFunction
 import kotlin.reflect.KParameter
 import kotlin.reflect.full.findAnnotation
@@ -29,7 +30,11 @@ class ModularParameterHandler<T>(val parsers: Map<KParameter, Builder<*>>, val c
 
     override fun parse(parameters: Parameters, headers: Headers): T {
         return constructor.callBy(parsers.mapValues {
-            val value = it.value.build(it.key.name.toString(), it.key.remapOpenAPINames(parameters.toMap() + headers.toMap().entries.groupBy { it.key.toLowerCase() }.mapValues { it.value.flatMap { it.value } }))
+            val value = it.value.build(it.key.name.toString(), it.key.remapOpenAPINames(parameters.toMap() + headers.toMap().entries.groupBy {
+                it.key.lowercase(
+                    Locale.getDefault()
+                )
+            }.mapValues { it.value.flatMap { it.value } }))
             if (value != null || it.key.type.isMarkedNullable) {
                 value
             } else {